Bismuth Sputtering Target

Bismuth is a silvery white to pink metal, brittle and easy to crush, and relatively stable chemical properties. Bismuth is the most diamagnetic of all metals, and the thermal conductivity is lower than any metal except mercury. It has a high electrical resistance, and has the highest Hall effect of any metal (that is, the greatest increase in electrical resistance when placed in a magnetic field).

Bismuth sputtering target is made of bismuth element, which is commonly used in magnetron sputtering, electron beam coating and other processes. Bismuth is a chemical element with the symbol Bi and atomic number 83.

Bismuth is a heavy metal element with a low melting point and high density, and has unique electrical, optical and thermal properties. Bismuth sputtering targets are mainly used to prepare functional thin films and have important applications in semiconductors, thermoelectric materials, optical coatings and other fields. 

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(1) Semiconductors and electronic devices

Topological insulator films (such as Bi₂Se₃, Bi₂Te₃) are used in spintronic devices.

Resistive random access memory (RRAM): Bi films can be used in non-volatile memory devices.

Thermoelectric materials: Bi₂Te₃-based films are used in micro-thermoelectric cooling/Peltier devices.

(2) Optical coatings

Infrared optical coatings: Bi films have high reflectivity in the near-infrared (NIR) region.

Multilayer interference films: Alternately deposited with dielectric materials (such as SiO₂, TiO₂), used in optical filters.

(3) Quantum material research

Topological quantum materials: Bi₁₋ₓSbₓ films are used to study the quantum spin Hall effect.

Superconducting films: Preparation of Bi-based high-temperature superconducting materials (such as Bi-Sr-Ca-Cu-O).

(4) Other applications

Radiation shielding: Bi's high atomic number (Z=83) makes it useful in X-ray protective coatings.

Degradable electronics: Bi films have potential applications in biodegradable electronic devices.

FAQ 

What is the typical purity of bismuth sputtering targets? How to choose different purities?
Standard purity:
99.9% (3N): Suitable for general optical coating or experimental research.
99.99% (4N) ~ 99.999% (5N): Used in semiconductors, thermoelectric materials and other fields that are sensitive to impurities.

Why does bismuth target need low-temperature sputtering? How to control the temperature?
Reason: The melting point of bismuth is only 271.5°C, and high temperature can easily cause the target to melt or splash.

Which backplanes can bismuth targets be bonded to? What are the special requirements for the bonding process?
Common backplanes: oxygen-free copper (OFHC), molybdenum (Mo).

Are you a factory or manufacturer?
A: Yes, we have a factory but we generally use our trading company to handle the business abroad. It will be convenient to receive the remittance and arrange the shipment.

What is the delivery method?
A: Generally, we send cargo by UPS, DHL or FedEx. Also, we can send by sea to seaport or by air to the closest airport.

Why is your product so cost-effective?
A: A: We cut out the middlemen in the end-to-end manufacturing process. We obtain our raw material directly from its source.

Do you do spot quality inspection or full inspection?
A: 100% full inspection. Inspectors will check the finished product individually, to ensure they adhere to all parameters. All unqualified products are discarded.

How do you ensure your lead time?
A: We have an efficient Order Management System, from material preparation to machining, and finally to a full inspection. Every stage of production is strictly monitored and controlled to give you an accurate delivery time.

What is the MOQ ? 
A: Depends on quantity, generally, no MOQ limit.

How to pay for it?
A: A bank transfer (T/T) will be acceptable.

What is the delivery time?
A: around 7-20 days which depends on the quantity and production.

What is kind of the package?
A: Generally, we use a carton case or plywood case with protective material inside to ensure the save of cargo

What is the lead time?
A: from order placed to cargo receiving will take around 10-25 days.

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